Mitsubishi QJ71C24N User Manual page 115

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
External device
SDA
R
SDB
RDA
R
RDB
SG
FG
External device 1)
SDA
SDB
RDA
R
RDB
SG
FG
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(b) External device and Q series C24 with 1:n (multidrop) system configuration
1) Connection example 1
2) Connection example 2
C24 1)
SDA
SDB
RDA
RDB
SG
FG
RS-422/485
cable
(c) External device and Q series C24 with n:1 (multidrop) system configuration
External device 2)
SDA
SDB
RDA
RDB
SG
FG
RS-422/485 RS-422/485
cable cable
C24 2)
SDA
SDB
RDA
RDB
SG
FG
RS-422/485
cable
External device n
SDA
SDB
RDA
RDB
SG
FG
RS-422/485
cable
MELSEC-Q
C24n
SDA
R
SDB
RDA
R
RDB
SG
FG
RS-422/485
cable
Terminal
R
resistor
C24 1)
SDA
SDB
RDA
R
RDB
SG
FG
Terminal
R
resistor
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